Siri vs Google Assistant
Research Value
Siri is famous for its own aggressive behaviour. When you speak āI m boredā it will come up with an aggressive response.
Google assistant is famous for itās co-operative behaviour. When you speak āI m boredā it will come up with multiple games, possible trips, movies etc... So, you can choose your requirement as per your wishes.
Voice Recognition
Siri is mainly used on devices who is associated with person. Apple have different approach for recognize voice. Before you want to use Siri you have to speak word āHey Siriā, so it will automatically recognize your voice only.
Google assistant some time works with more than one person voice. So it can be possible it will be confusing before showing the appropriate results.
Extendibility
Siri have typical Apple fashion, itās only work with approved third party libraries. Currently it involves only few features like calling, messaging, sending money etc... Siri has no real support for IFTTT.
Google have a smaller suite of third party apps, but itās expanding. It also offers the integration with IFTTT for creating a custom skills
Automatic Responses with Data Storage
Siri communication with the user solely and it is not giving automatic reply. Also it is not believe in storing any personal data in their server.
Google Assistant working with automatic reply to system when you are busy to somewhere else. Also they are storing generic phrases to their server.
Presentation / Memory
Siri does not offer to save any type of conversation. Also each question have independent window so you can not refer your previous chatting.
Google Assistant treats your all conversation like a chatting. Also it gives you to option for scrolling the conversation. So you can refer any time your previous conversation.